Game developed by Ultimate Games

March of War - FACE OFF
March of War - FACE OFF

Music / Sound Design - Mariusz Jasionowicz / RareSound Production


Game developed by Ultimate Games

Hi !

For me Music composition and sound design is not a profession, It’s the way I live and express myself and the love to music and sound through my own work in the works of others.


                                                                                                                                                      Mariusz Jasionowicz | COMPOSER, SOUND DESIGNER

Let’s Make Something Great ...

If you read this, it is likely that you want to take your project to another level of awesomness and add to it something unique. If that sounds like you, then we both have the same target and you are most welcome here !
My aim is to transform your project to something really unique and emotional, adding music that is carefully crafted and polished considering every single note and sound effects, exclusively created from a mixture of sound libraries, synthesis, custom recorded foley to bring alive your every creation, animation or character. All that will not only tell your story even if someone’s eyes are closed but will enrich the narrative side of it dramatically.




  • Music Composition
  • Audio Editing (Dialogue, sfx, music)
  • Sound Design
  • Audio Mixing
  • Field Recording
  • Foley Recording and Editing
  • Voice Over/ADR Mixing

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Featured Projects with our work
Wonster Words / Puzzingo  
Multiple awards in the filds of early learning games / apps
FX Guru 
Among the Top Selling Apps on Google Play App Store!
Secrets of Grindea 
Winner of the 2012 Swedish Game of the Year Award
Secrets of Grindea - Sound by Mariusz Jasionowicz
Picaro  / The Pronunciaion App 
Several nominations in the fields of Language learning by British Council.
Music composition and sound effects for games, film, and media
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